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प्रश्न
Long answer question
Explain the Reflex Pathway with the help of a neat labelled diagram.
उत्तर
i. The reflex pathway comprises at least one afferent neuron (receptor) and one efferent (effector or excitor) neuron appropriately arranged in a series.
ii. The afferent neuron receives a signal from a sensory organ and transmits the impulse via a dorsal nerve root into the CNS (at the level of the spinal cord).
iii. The efferent neuron then carries signals from CNS to the effector. The stimulus and response thus form a reflex arc as shown below in the knee jerk reflex.
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संबंधित प्रश्न
Write a and b in the given flow chart of the neuron through which information travels as an electrical impulse.
What are the two main communications systems in an animal's body?
In a synapse, chemical signal is transmitted from :
(a) axon to cell body of the same neuron
(b) cell body to axon end of the same neuron
(c) dendrite end of one neuron to axon end of adjacent neuron
(d) axon end of one neuron to dendrite end of adjacent neuron
Multiple choice question. Tick (✓) the correct choice:
Nervous system in humans consists of
- brain and nerves
- brain and spinal cord
- brain, spinal cord and nerves
- none of the above
Fill in the blank:
Peripheral nervous system consists of _________.
Name the four principal tastes and the respective regions of the tongue concerned with their perception.
Explain the Term: Cyton
Complete the following sentence with appropriate word :
There are _______ neurons in our body.
Complete the following sentence with appropriate Word
Neurilemma is:
What is the other name for auditory nerve?
